Shockless railroad-crossing.



O. Wi. ROBINSGN.

SHOCKLESS RAILROAD CROSSING.

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Patented. Nov. 5, 1918.;

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0. K. ROBINSON.

SHOCKLESS RAILROAI) vCHSSHJG.

APPLICTION FILED MAY l5, 15H8.

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Patented Nov. 5,1918.

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SHOCKLESS RAILROADCROSSING'.

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Specification of Letters Patent.

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Application tiled May 15, 1916. Serial 110.2343164.

To all whom t may concern:

Be it knownthat l` OSCAR K. ROBINSON, a

citizen ofthe UnitedStates, residing` at San crossing and my invention consists oit' the novel t-eatures herein shown, described and claimed.

Figurel is a plan view of asliockless rail-` road crossing embodying1 the principles of my invention.

is a vertical` sectional` detail on the lines 2-2 of Figs. l and 3.

Figx is a vertical sectional detail on the lines 3-3 of Figs. 1 and 2.

Fig. 4 is a vertical sectional detail on the lines 4-4 of Figs. l and 5. t

Fig. 5 is a vertical sectional detail onthe lines 5.-5 of 1 and 4. y y

Fig. 6 is a vertical sectional detail on the Referring to Figs. 1,- 3 and 4, the vtrack 1 crosses the track 'at right angles and the `cars running upon the track l move in the direction indicated by the arrows 3, and referring to Figs. 1, 2 and` 5 the oars move upon thetrack 2 inthe direction indicated by the `arrows-4. lThe intersection of the rail 5 withthe rail 6 is formed `integral to make a. square corner and 1in a like manner the intersection of the rail 7 with the rail; 8 and the intersectionof the rail 9 and the rail 10 and the intersection .of the rail'llandthe rail "12 are formedintegral, and these intersections are laid in the form of a square, there being an inserted section 13 in lin-ewith the rails 6 and 8, an inserted section 14in`iline with the rails `10 and 12, an inserted section 15 in line with the rails l5 and 9, `and an inserted section 16 in line with the rails 7 and 11.

Slots `17 18 are `tormed at the ends lof the insertion C13, slots 19 .i and 20 are 'formed at the ends of the insertion 14, slots ,21 `and 22 are formed at the ends ot the insertion `15,

and slots 23 and 24 are formed atthe ends of the insertion 16, the slots 17 and 1S, and

"19 and 20 serving4 to allow thetlanges of the car wheels moving on the track 2 to pass and the slots 21 and 22and 23 and 24 serving to allow the `flanges of the car wheels on the track 1 to pass.

.Theactuators 26 are pivotally con- `being much bearing face 27 in itsupper position when a Referring tollig.` 3, the webs 29 andBO of the rails lO'and 15 meet under the slot 21,and the slot 21 extends down to the shoulder 31 of the web 30. `The actuator 25 is abar titting alongside the inner `tace of the rail l0 and pivotally mounted by the bolt 32 `inserted through the rear end of the actuator and through the web 2S). A. bell crank lever 33 is pivotally mounted upon a bolt 34, and a link 35 connects the central portion of the yactuator 25 to the horizontal arm 36 of the bell crank lever. ik bearing 37 extends inwardly from theft-ace of the web 29, and a rod 38 is slidingly mounted horizontally through fthe bearing 37 and through the upper end of the vertical arm 39 of the bell crank lever. A spring 40 fis mounted upon S the rod between the bearing 37 and a nut or head `4l upon the rear end ot the rod. A

spring se`at42 is ixed upon the rod 38 in `front ot the bell crank lever lpaiitl astiit `spring 43 is mounted `uponutherod `38 be- Si tween the upper end of the arm 89 and ,the spring seat 42,1the tension `ot the spring43 y greater than the tension of `the spring 40. t Y kl bearing 44 extends inwardly from `the web 29 and a rod 45 is connected to the` forward end ot theactuator 25 and eX- tends through the bearing 44, there being an adjusting nut 46 upon the` lower end of the rod 45 so that byinanipulating the nut 46 the bearing :tace 27 may be accurately adj usted relative to the adjacent tread faces of the rails.` An expansivecoil` spring 4T is mounted upon the `rod 45 4between the .bearing`4`4 andthe actuator 25; the tension of the spring being exerted to hold the bearing tace 27 in its upward position. `A post 48 extends downwardly from the bearing tace 27 and a supporting `block 49 lits between the post 48 andthe shoulder 31 to hold the car is` passing on the other track.` notch 50 formed in the web 29, and a supporting t L.l0y

when .the car wheel flange runs upon the block 51 is fixed upon the forward end of the I Ythe head 55 and the insertion 14 and when 'the car wheel flange passes the actuator 25 the supporting block 51 is moved under the head 55 to hold the said head 55 in its uppermost position while the car passes. l The actuator 52 has a slot 56 in line with the actuator 25 so that the car wheel flange passing over the actuator 25 will pass through the slot 56; this construction being necessary due to the fact that the head 55 .upon the actuator 52 is beyond the bearing face 27 when considered from the bolt 53.

A bell crank lever 57 is pivotally mounted against the inner face of the web 30 upon `a bolt 58, a link 59 connects the free end of the actuator 52 to the arm 60 of the bell crank lever. A bearing 61 extends inwardly from the web 30, a rod 62 is slightly mounted horizontally through the bearing 61 and through the upper end of the arm 63 of the bell crank lever 57, an expansive coil spring 64 is mounted upon the rod 62 between the bearing. 61 and the head or nut 65. A

` spring seat 66 is fixed upon the rod 62 and a stiff spring 67 is mounted upon the rod 62 between the spring s eat 66 and the upper end of the arm 63. A supporting block 49 is fixed tothe forward end of the rod 62 so that actuator 52 and presses the head 55 down- "wardly, the supporting block 49 will slide vunder the post 48k and support the head in its uppermost position. In a like manner 1 when the car wheel flange is upon the actuator 25 the lblock 51 will slide under the head 55 and support the head 55 flush with the rails. The block 51 at this time is supported by the shoulder 68.

The actuator 69 is mounted inside of the rail 5 and has a head 70 fitting in the slot 18. The actuators 26 and 69 are mounted and connected to support each other in the same manner as the actuators 25 and 52, the onlydifference being that the actuator 69 does not cross over the slot like the vactuator 52 does. The actuator 71 is mounted inside of the rail 7 and is identical in construction and operation with the actuator 25 and the actuator 72 is mounted inside of the insertion 13 and crosses over the slot filled by the actuator 71 the same as the actuator 52 lcrosses over the slot filled by the actuator 25.

73 is mounted inside of the insertion 14 and the actuator l74 is mounted -inside of the insertion 16. The actuator 73 is pivotally connected to the web 7 4 of the rail insertion 14 by a bolt 75 and has a head 7 6 fitting in the slot 23 and a notch 77 in line with the slot 19. vA bell crank lever 78 is pivot-ally mounted against the inner face of the web 74 by a bolt 79, a link 80 connects the free end of the actuator 73 to the horizontal arm 81 of thebell crank lever, and a rod 82 is slidingly and horizontally mounted through a bearing 83 extending inwardly from the web 74 and through the upper end of the vertical arm 84 of the bell crank lever. An expansive coil spring 85 is mounted upon the rod 82 against the bearing 83 and against the head or nut 86 upon the rod 82, a spring seat 87 is fixed upon the rod 82 and a heavy coil spring 88 is placed upon the rod 82 against the spring seat 87 and against the upper end of the arm 84. A supporting block 89 is fixed to the forward end of the rod 82 in position to slide under and support the head 97 of the actuator 74. An expansive coil spring 90 is placed upon a rod 91, the rod is attached to the forward end of the actuator 73 and inserted downwardly through a bearing 92 and an adjusting nut 93 is placed upon the lower end of the rod.

The actuator 74 is pivotally connected to the web 94 by a bolt 95 and has a notch 96 in line with the slot 23; said notch being deep enough to allow the actuator 73 to cross over, and the actuator 74 carries a head 97 to fit in the slot 19. A bell crank lever 98 is pivotally connected at the inner face of the webb 94 by a bolt 99, a link 100 connects the horizontal arm 101 of the bell crank lever to the free end of the actuator 74, and a rod 102 is slidingly and horizontally mounted through the bearing 103 and through the upper end of the vertical arm 104 of the bell crank lever 98. An expansive coil spring 105 is mounted upon the rod 102 between the bearing 103 and the head or nut 106. A spring seat 107 is fixed upon the rod 102 and a heavy coil spring 108 is placed upon the rod 102 between the upper end of the arm 104 and the spring seat 107. A supporting block 109 is fixed to the forward end ofthe rod 102 in position to slide vunder the head 76; said supporting block 109 being supported by the shoulder 110.

Referring to Fig. 2, a bolt 111 is connected to the forward end of the actuator 52 and inserted downwardly through a bearing 112, there being an expansive coil spring 113 upon the bolt against the bearing to hold the free end of the actuator 52. An adjusting nut 114 is placed upon the lower end of the bolt, so that by manipulating the nut 114 the actuator may be accurately adjusted to the proper elevation.

Referring to Fig. 5, a bolt 115 is connected to the forward end of the actuator 74:, a spring 116 is placed upon the bolt and the bolt inserted downwardly through a bearing 117 and a nut 118 placed upon the lower end of the bolt, so that by manipulating the nut 118 the actuator 74 may be'accurately adjusted to the proper elevation.

When a car wheel flange is upon the actuator 7 3 the block 89 will move under the head 97 and be supported by the shoulder 119 to support the head 97 flush with the tread of the track, and when a car wheel flange is upon the actuator 74, the block 109 will be moved under the head 7G to support the head 76 flush with the face of the track. The springs 43, 67, 88, and 108 are stid enough to move the supporting heads under ordinary conditions, but if an obstruction gets in the way so that the heads can not move the springs will give to allow the cars lto pass. In this way these springs become safety devices so that if any of the partsf refuse to move, still the actuators may be operated by the car flanges.

Various changes may be made without departing from the spirit of my invention, as claimed.

l claim: i

1. ln a shockless railroad crossing, the combination with two crossed rails having crossed slots for the tire wheel flanges, of an actuator pivotally connected at its rear end to one rail, and having a tread head eX- tending into a slot, a bell crank lever pivotally mounted below the actuator, a link connecting the actuator to one arm of the bell crank lever, a second actuator pivotally connected at its rear end at the inner side of the second rail and having a tread head extending into the other slot, a second bell crank lever mounted below the second actuator, a second link connecting the second ing four track intersections forming right angle corners and laid in the form of a square with the corners toward each other and pointed toward a common center, inserted -track sections between the intersections, there being car wheel flange slots at a the ends of the inserted sections, actuators pivotally connected at their rear ends to the inner faces of three intersections and having tread heads extending into the car wheel flange slots at the adjacent ends of the inserted sections, actuators pivotally connected at their rear ends to the inner faces of the other inserted sections and having tread heads extending into the remaining car wheel slots, bell crank levers pivotally mounted below the actuators, links connecting the actuators to the bell crank levers, slidu ing supporting blocks mounted t0 move into and out of position to support the tread heads, said supporting blocksbeing connected to the bell crank levers; so that when a car is moving upon one track the corresponding actuators are depressed by the car wheels and supporting blocks are moving under the other actuators to support the tread heads in the slots across which the car wheels will pass.

lin testimony whereof l have signed my name to this specification.

@SCAR K. RUBINSUN.

Copies o1 this patent may be obtained for ve cents each, by atlresang the Uommssioncr o1 Patente. Washington, D, Gm 

